Huge aggressive mixed-type osteoma in a young patient

Abstract

We present a 14-year-old male patient who had progressive exophthalmos and deformity in the frontoorbital region of 5 months' duration. Neurologic examination of the patient revealed limitation in upward gaze. A Waters' view X-ray revealed a dense osseous mass located in the right frontal sinus and orbit. Computed tomography revealed a bony mass extending to the right frontal sinus, orbital space, anterior ethmoid sinus, and frontal lobe. The frontal process of the maxilla, nasal bone, and crista galli were also involved. Magnetic resonance imaging demonstrated heterogeneous signal intensities in the medial part of the lesion, while the lateral part showed no signal from dense osseous tissue. The entire osseous mass was excised. Pathological investigation of the specimen revealed a mixed-type osteoma.

Bone-related disorders of the jaw: A clinico-radiological diagnostic algorithm

“…As it is composed of compact bone and spongy osteoma, it shows mixed densities and internal septations on CT and low to absent signal on MRI (Figure 10). [55][56][57][58][59] Osteoblastoma Basic details. Osteoblastoma is a rare bone-forming tumour that accounts for about 1% of bone tumours, with 11% occurring in the maxillofacial region.…”

“…As it is composed of compact bone and spongy osteoma, it shows mixed densities and internal septations on CT and low to absent signal on MRI (Figure 10). 55–59…”